Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Lubrication Analysis of Hydraulic Spool Valve with Groove Cross Sectional Shapes

Groove 단면형상에 따른 유압 Spool Valve의 윤활해석

  • Park, Tae-Jo (School of Mechanical & Aerospace Engineering, ERI, Gyeongsang National University) ;
  • Hwang, Yun-Geon (Graduate School Dept. of Mechanical & Aerospace Engineering, Gyeongsang National University)
  • 박태조 (경상대학교 기계항공공학부) ;
  • 황윤건 (경상대학교 대학원 기계항공공학부)
  • Published : 2009.02.28
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Abstract

The spools in most hydraulic spool type control valve have several circumferential grooves to pre-vent well known hydraulic locking problems which result in high friction force and excessive wear. In this paper, a commercial computational fluid dynamics (CFD) code, FLUENT is used to investigate the flow and lubrication characteristics of grooved hydraulic spool valve. The stream lines and pressure distributions are obtained for various groove cross sectional shapes and film thicknesses. The stream lines are highly affected by groove cross sectional shape but pressure distributions mainly depend on the film shape and its magnitude. Therefore the numerical method adopted in this paper and results can be use in designing of various grooved spool valve.

Keywords

References

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